Measuring Distance• Length =
the distance between two points
• Always use a metric ruler!
1 2 3 4 5
How to read a metric ruler
1 2 3 4 5cmcm
Value =
Always estimate the last digitAlways estimate the last digit
1.67 cm
mmmm
What is the length indicated below?What is the length indicated below?
Volume• the amount of
space something occupies
• Calculating volume of a cube
L x W x H
Check for Understanding:
Determine the volume of a cube that is 3 cm x 2 cm x 5 cmAnswer: 30 cm3
Volume•Of a liquid Use a Graduated Cylinder
Read the bottom of the curve of liquid (meniscus)
The volume of water in this cylinder is 6.62 mL
Check for Understanding
What is the volume of the liquid in this cylinder?Answer:
52.7 mL
What is the volume of the rock?
• of an irregular object
rock
Volume
Answer: 15 mL
Mass• the amount matter in a
substance• measured
In grams (g) Using either a triple beam
balance or an electronic balance
How to use a triple beam balance
Move the ridersuntil the pointer is zeroed
How to use a triple beam balance
Place the object to be massed on the scale.Re-zero the
pointer
Massadd all the riders
373.35 g
CHECK FOR UNDERSTANDINGWhat mass is indicated below?
137.40 g
Temperature
is how hot or cold something is
Science uses Celcius not Farenheit
Reading a Celsius themometer
What is the Celsius temperature on the thermometer to the right?answer: 12.1 C
Measuring Time and Temp
Your Turn!Your Turn! What is the celcius
temperature of the thermometer to the right?
answer: 13.8 oC
Temperature
Indicates how acidic or alkaline a solution is.
pH
•Fold the filter paper in half•Fold in half again and tear
off a small corner. •Form into a
cone with the torn side fitted against the funnel.
Folding Filter Paper